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September 21, 2014

Search: Calculate the molarity (M) of a solution of the strong base KOH if the pH is 12.5.

Number of results: 39,475

chemistry repost!!
The mole fraction of acetic acid (CH3COOH) in an aqueous solution is 0.675. Calculate the molarity of the acetic acid, if the density of the solution is 1.0266 g mL-1.
November 10, 2007 by keely

Chemistry
If 50.0mL of 1.60M HCl was added to 50.0mL of 1.80M NaOH, calculate the molarity of the resulting NaCl solution. (Hint: resulting solution has a volume of 100 mL)
April 1, 2010 by Michelle

Chemistry
If 50.0mL of 1.60M HCl was added to 50.0mL of 1.80M NaOH, calculate the molarity of the resulting NaCl solution. (Hint: resulting solution has a volume of 100 mL)
April 1, 2010 by Jen

Chemistry
An aqueous antifreeze solution is 40.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.05 g/cm3. Calculate the molality, molarity, and mole fraction of the ethylene glycol.
January 21, 2011 by Sarah

chemistry
Based on your titration of the 150ppm standard solution of Ca2+ calculate the molarity of the EDTA solution we used, which is Ca2+ + EDTA4- ----> [CA(EDTA)]2-
March 25, 2014 by Mai

chem
A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 13.0 mg of fluoxymesterone in enough water to give a total volume of 500.0 mL. A 100.0 L aliquot (portion) of this solution ...
November 4, 2007 by mel

chemistry
A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 13.4 mg of fluoxymesterone in enough water to give a total volume of 500.0 mL. A 100.0-L aliquot (portion) of this solution ...
November 26, 2013 by quincy

Chemistry (acids and bases)
Calculate pH, pOH, [H+], [OH-], and Ka for a 0.026 M solution of HI (a strong acid). Please help me :(
January 7, 2011 by Marie

chemistry
Calculate the pH of a 3.0010-4 M solution of the strong acid HClO4. Round your answer to 3 significant digits.
October 10, 2013 by HELP ASAP PLEASE

chemistry
Commercial bleach contains 5.25% (by mass) of NaClO in water. It has a density of 1.08 g/mL. Calculate the molarity of this solution.
March 3, 2010 by Drew

Genral chemistry
if you dissolve 1.60g of Cu(No3)2 in 100mL of water, calculate the molarity of the resulting solution ?
March 30, 2011 by Abdul

Chemistry
Calculate the molality, molarity, and mole fraction of FeCl3 in a 39.2 mass % aqueous solution (d = 1.238 g/mL).
February 16, 2013 by Stevi

chemistry
calculate the molality, molarity, and mole fraction of NH3 in an 12.80 mass % aqueous solution (d=0.9651 g/ml)
September 8, 2014 by maria

Chemistry
Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and found moles of solute...
February 22, 2010 by Amber

Chemistry
Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and found moles of ...
February 22, 2010 by Someone please help.

chemistry
The enthalpy of neutralization for the reaction of a strong acid with a strong base is -56 kJ/mol of water produced. How much energy will be released when 185.0 mL of 0.400 M HCl is mixed with 152.5 mL of 0.500 M NaOH?
November 13, 2011 by Bill

Chemistry
Hi i kind of get these questions but i got stuck on this... What is the molarity of an H2SO4 solution if 0.25L of the solution contains 0.75L MOL of H2SO4? thanks again for yourself i really do appreciate it :) Molarity= molessolute/litersolution = .75/.25= 3M I assume the ....
April 22, 2007 by Fred

Chemistry 12
name a compound that acts as a weak base? methanol? define the term weak bronsted-lowry base im not sure how to put this in words, but a weak base is found when you got a strong acid, when your ka is high, kb will be low.
January 25, 2013 by Shreya

chemistry
Please judge my answer: Question: 24 mL of 0.39 mol/L acetic acid is titrated with a standardized 0.33 mol/L KOH solution. Calculate the pH of the solution after 17 mL of the KOH solution has been added. Assume the Ka of acetic acid is 1.8 x 10-5. Answer: The equation for this...
April 15, 2008 by Abigail

chem 211
When 20.0 mL of 0.535 M H2SO4 is added to 20.0 mL of 1.07 M KOH in a coffee-cup calorimeter at 23.50C, the temperature rises to 30.17C. Calculate H of this reaction per mole of H2SO4 and KOH reacted. (Assume that the total volume is the sum of the individual volumes and that...
October 18, 2013 by beti

chem
Determine the volume of 0.240 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is shown below. H2SO4(aq) + 2 KOH(aq)--> K2SO4(aq) + 2 H2O(l) (a) 26 mL of 0.240 M H2SO4 thanks
March 11, 2011 by Abby

chemistry
when 12.76mL of HCl of unknown concentration (but less than the base) are reacted with 15mL of 3.254M NaOH, 1.68kJ of heat are released. What is the molarity of the HCl solution?
November 23, 2010 by serena

Chemistry
I have had this question in my homework, and honestly I got stuck in these questions. I managed to convert 5.3g of Na2CO3 into moles, but then I got stuck and do not know what to do next to solve the question. If anyone knows how to work this out, help from anyone is greatly ...
September 29, 2012 by Matthias

chemistry
At what point in the concentration of the weak acid or conjugate base does the buffer solution stop resisting a PH change when strong acid is added ? Thank for helping
October 23, 2011 by Namis

chemistry
A aqueous solution of acetic acid with a density of 1.25 g/ml is 30.0% by mass HC2h3O2 (MM=60.0) Compute the molarity of this solution. I figured out that if you divide 30.0 by the molar mass 60.0g which gives you .5 mol. I cannot seem to figure out what i change 1.25 g/ml ...
February 23, 2009 by Aimee

Chemistry
0.000333 g fluorescein (332.32 g/mol) is dissolved in 225 mL solution of ethanol. The density of ethanol is 0.785 g/mL. What is the concentration of the solution in molarity (M)? How many ppm? I already know that the molarity is 4.45E-6. I just need help on trying to find the ...
July 16, 2012 by Vince

Chemistry
Hi, I am having trouble with two questions. Find the pH of the following aqueous solutions prepared by adding: a) 20mL 0.12M HCl to 10mL 0.16M CH3COOH + 20mL 0.20 KOH. b) 10mL 5.0x10^-7 M HCl to 90mL H2O For a), I thought it was a buffer solution so what I tried to do was find...
August 4, 2010 by Amy

Acid/Base Chemistry
A 497 mL sample of 0.9960 M HI is mixed with 443 mL sample of KOH (which has a pH of 13.51). What is the pH of the resulting solution? What are the steps to solving this problem? I think you need to find the concentration of OH by taking 10^-pOH, and then do an ICE table from ...
December 8, 2013 by Jenna

chemistry
Is this a buffer system? NH3/(NH4)2SO4? It is formed by mixing NH3 (weak base) and a strong acid (H2SO4), but according to my worksheet it is not a buffer system. Why is this so? Isnt it a buffer as long as it consists of a weak base and its salt of a strong acid? Please do ...
January 13, 2011 by seth

Chemistry
Tartaric acid has two acidic (ionizable) hydrogens. The acid is often present in wines and precipitates from solution as wine ages. A solution containing an unknown concentration of the acid is titrated with NaOH. It requires 22.62 mL of 0.2000 M NaOH solution of titrate both ...
October 10, 2011 by Destiny

Chemistry
25.00 mL of a solution of oxalic acid are titrated with 0.2586 m NaOH (aq). The stoichiometric eend point is reached when 43.42 mL of the solution of base is added. What is the molarity of the oxalic acid solution? Oxalic acid reacts with sodium hydroxide as shown: H2C2O4(aq...
December 1, 2012 by ANONYMOUS

chemistry
A 30 mL sample of .165 M propanoic acid is titrated with .300M KOH. Calculate the pH at each volume of added base: 0 mL, 5 mL, 10, equivalence point, one-half equivalence point, 20 mL, 25 mL. Use calculations to make a sketch of the titration curve.
October 23, 2013 by Anonymous

Chemistry
Can someone please check to see if I am doing this correctly. Thank you :) Q) Calculate the new molarity of a 35mL sample of 0.450 M CaCl2 solution that is diluted with enough water to make 250 mL of solution. A) 0.450 m CaCl2 x 35mL/250mL = 0.063 mL diluted solution
April 1, 2013 by Kishwa

chemistry
Titration of 50.00 mL of 0.0521 M sodium oxalate, Na2C2O4, required 38.71 mL of a potassium permanganate solution: 5 C2O42- + 2MnO4- + 16H+ = 2Mn2+ + 10 CO2 + 8H2O Calculate the molarity of the potassium permanganate solution.
June 23, 2012 by mary

chemistry
A 15.0ml sample of NaCL solution has a mass of 15.78g.after the NaCL solution is evaporated to dryness, the dry salt residue has a mass of 3.26g. calculate the following concentrations for the %(m/m), % (m/v), molarity (M)
November 1, 2012 by jack

AP Chem
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.054 moles of sulfuric acid is mixed with water to make 667 milliliter of solution,what is the molarity of H+? Answer in units of M doing mole/liter doesn't work
April 1, 2012 by Nick

Chemistry
a solution is made by combining 5 mL of .2M HC2H3O2, 5 mL of .2M NaC2H3O2, and 10 ml of water. calculate the molarity of HC2H3O2 and of NaC2H3O2 in this new solution
March 28, 2011 by Anonymous

chemistry
The density of a 60% (m/m) ethanol solution 0.8937g/ml , calculate the molarity of the solution , step by step . Molar mass of ethanol = 46.07
July 29, 2013 by kaksha

Molarity
Determine the molarity and normality of a solution prepared by dissolving 55 mg of sodium bicarbonate (NaHCO3) in 750 mL of water.
January 14, 2010 by joe

science
Describe how you would go about making 1200mL of 0.100 Molarity HNO3 from a concentrated solution that is 12 Molarity?
March 14, 2013 by Nicole

Chemistry
Classify the following as: Weak or strong acid, weak or strong base, salt (from weak/strong acid and base). If appropriate, split the formula into its component ions. HNO3 So far, all I have is: HNO3 + H2O -> NO3^- + H3O^+ And I know HNO3 is a strong acid. What would I do ...
May 26, 2007 by Raj

CHEMISTRY
The enthalpy of neutralization for the reaction of a strong acid with a strong base is −56 kJ/mol of water produced. How much energy will be released when 198.5 mL of 0.400 M HCl is mixed with 150.1 mL of 0.500 M NaOH?
May 1, 2012 by Sarah

CHEMISTRY
The enthalpy of neutralization for the reaction of a strong acid with a strong base is −56 kJ/mol of water produced. How much energy will be released when 200.5 mL of 0.400 M HCl is mixed with 149.1 mL of 0.500 M NaOH?
October 9, 2012 by Sarah

Chemistry
How do I find the molarity of NaCl for different dilutions? You calculate the number of moles per liter of solution.
April 8, 2007 by Colleen

chemistry
calculate the molarity of 70.7g C2H6O in 2.25 L of solution, can someone walk me through this and provide the right answer? please and thank you =))
December 3, 2010 by Jenni

college chemistry
Followed by the total volume. Calculate the molarity of this solution: 0.521 mol NaCl;125 mL
April 16, 2012 by michelle

chemistry
how to Calculate the molarity of a solution if sulphuric acid contains 13%H2SO4 by mass and density is 1.02 gm per cm3.
May 4, 2012 by hari

chemistry
how to Calculate the molarity of a solution if sulphuric acid contains 13%H2SO4 by mass and density is 1.02 gm per cm3.
May 4, 2012 by hari

Chemistry Molarity
What is the concentration, in units of molarity, of a 500mL solution containing 0.750 moles of sodium chloride in water?
March 28, 2011 by Toni Jones

Chemistry Molarity
What is the concentration, in units of molarity, of a 500mL solution containing 0.750 moles of sodium chloride in water?
March 28, 2011 by Toni Jones

Chemistry
25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of this solution required 20ml of N/10 kmn04 solution for complete oxidation. Calculate the percentage of f2s04 7h20 in the sample 1 g of mixture of ...
January 11, 2014 by Ken Hung

Chemistry
Diethylamine (C2H5)2NH, is a weak base that ionizes in water,a 0.600 M solution of (C2H5)2NH is 4.65% ionized at 25 degrees Celsius. -Calculate the pH of the solution. -Calculate the Kb for diethylamine.
December 5, 2012 by Chris

Chemistry
The question says write a reaction for the ionization of the following compound in water. Identify the acid, the base, the conjugate acid, and the conjugate base in each of them. 1. H2SO4 2. KOH 3. CH3COOH 4. NH3 5. HNO3 My guesses are: H2SO4 + H2O -> H3O+ + HSO4- KOH + H2O...
May 31, 2009 by Samantha

chemistry
When titrating a strong acid with a strong base, which is true? 1. the titration curve slopes upward 2. an indicator that changes at pH 8 would be acceptable 3. the pH changes slowly at the equivalence point
June 11, 2008 by bill

chemistry
50ml of 0.3M SO4 is titrated against KOH & end point is reached when 35.3 ml of the acid is added.find the molarity of the alkali
November 7, 2011 by Luc

Chemistry
What is the molarity of a solution of Mg(OH)2 if the solution contains 1.35 g in exactly 100 mL of solution??? A 15.0 mL solution of H2SO3 is neutralized by 12.0 mL of a standradized 1.00M NaOH solution. What is the concentration of the H2SO3 solution?????? What volume of a 1....
December 12, 2012 by Tasha

Chemistry
A 30.00ml sample of 0.1234 M hypobromous acid (HBrO) is titrated with a 0.2555 M KOH solution. The Ka for HBrO is 2.5*10^-9 Calculate the pH of teh titration mixture at the equivalence point.
April 17, 2010 by Anonymous

chemistry
ou weigh out Potassium Permanganate, Mass of KMnO4 (MW=158.034).......... 0.1569 g You dissolve it completely in water.......... 46.00 mL (a) Molarity of MnO4- solution........................... ________________ M You pipet out your UNKNOWN............. 0.90 mL You acidify ...
July 26, 2013 by faruk

chemistry
ou weigh out Potassium Permanganate, Mass of KMnO4 (MW=158.034).......... 0.1569 g You dissolve it completely in water.......... 46.00 mL (a) Molarity of MnO4- solution........................... ________________ M You pipet out your UNKNOWN............. 0.90 mL You acidify ...
July 27, 2013 by faruk

chemistry
why is HS- a stronger BL base compared to HSO4 In a series of oxybases with the same central atom, the base with more O atoms is stronger. In a series of oxybases with the same central atom, the base with less O atoms is stronger. Since H2SO4 is one of the seven strong acids, ...
February 26, 2013 by Hannah

chemistry
How would I calculate the molarity of the resulting solution if 25.0mL of 1.50 M HCL solution is diluted to 500 mL. I know you have to change the milliliters to liters by dividing by 1000 and I know that M= Moles of Solute/Liters of Solute but after that I'm lost. Please help!
July 1, 2011 by Daniel

Chemistry
Calculate the molarity of 1.77 mol of LiCl in 30.6 L of solution. This is for hw thats submitted online. the answer i got is 0.06 M. but it says its wrong, whyyyyy?
October 29, 2010 by Jazz

chemistry 2
You are instructed to create 800. mL of a 0.69 M phosphate buffer with a pH of 7.6. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. what is the molarity needed for the acid component of the buffer?What is the molarity needed for the base ...
March 4, 2014 by Danielle

12th grade
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of the perchloric acid solution? The density of water is 1.000 g/mL. When I did this part I got 67.5% But, I am having trouble with the secind part. ...
October 24, 2010 by Helpplease

Ap Chemistry
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of the perchloric acid solution? The density of water is 1.000 g/mL. When I did this part I got 67.5% But, I am having trouble with the secind part. ...
October 24, 2010 by Helpplease

chemistry
please help solve this problem now. I really need an answer. thank you When one mole of KOH is neutralized by sulfuric acid, q=-56kJ. At 22.8 C , 25.0 mL of 0.500 M H2SO4 is neutralized by 50.0 mL of 0.500 M KOH in a coffee-cup calorimeter. What is the final temperature of the...
March 3, 2012 by ogi

Chemistry(Please just check, thank you)
1) The approximate pH of a 3.0 X 10^-3 M solution of the strong acid H2SO4 is? I did pH= -log(3.0 X 10^-3) = 2.5 2)If HCLO2 is a stronger acid than HF, which is stronger than HOCL, then the order of strengths of the conjugate bases of these acids is? My answer is CLO2^-^ < ...
March 24, 2012 by Hannah

Chemistry
H2SO4 solution containing 200.1 g of H2SO4 in 0.3500 L OF solution has a density of 1.3294 g/ml.calculate (A) Mass%H2SO4(m/m) (B)mass%H2O(m/m) (C)Molarity (D)Molality
September 1, 2012 by Yeneta

Chemistry
H2SO4 solution containing 200.1 g of H2SO4 in 0.3500 L OF solution has a density of 1.3294 g/ml.calculate (A) Mass%H2SO4(m/m) (B)mass%H2O(m/m) (C)Molarity (D)Molality
September 1, 2012 by Yeneta

APChem
"The osmotic pressure of a saturated solution of strontium sulfate at 25C is 21 torr. What is the solubility product of this salt at 25C (Hint: calculate molarity from the colligative properties eqn of osmotic pressure and use it in the equilibrium expression" I converted torr...
March 17, 2010 by Kiki

Chemistry
Commercial bleach contains 5.25% (by mass) of NaClO in water. It has a density of 1.08 g/mL. Calculate the molarity of this solution. (Hints: assume you have 1 L of solution (mass 1080 g); molar mass of NaClO is 74.4 g/mol)
March 3, 2010 by Drew

science-chemistry
We performed a titration with NaOH solution with KHP. Now I need to calculate the average molarity of NaOH based on this data Weight of khp= 0.1083 g Volume of naoh = 6.4 ml Then if i get this how do i get the molarity of ch3cooh totrated in naoh with the data Volume of ...
April 23, 2014 by cassy

Chemistry
Write the balanced neutralization reaction between H2SO4 and KOH in aq. solution. .350 L of .410 M H2SO4 is mixed with .300 L of .230 M KOH. What concentration of sulfuric acid remains after neutralization? ______ M H2SO4
October 4, 2013 by Chelsea

chemistry
This soidum hydroxide solution was then used to determine the amount of acetic acid in vinegar. Three titrations of the sodium hydroxide solution against exactly 5mL of vinegar using phenolphthalein indicator required 22.85Ml, 22.67mL and 22.93mL of the sodium hydroxide ...
November 25, 2012 by Elizabeth

Chemistry(Please Check)
You dissolve 6.55 g of potassium nitrate in enough water to make a 250. ML solution. 1.What is the molarity of this solution?answer:0.0262 2.If you took out 15.0 mL of this solution, how many moles of potassium nitrate would you have?answer:0.393 3. What is the percent (m/v) ...
April 23, 2012 by cateye

chemistry
A solution of HClO4 was standardized by dissolving 0.4125 g of primary standard grade HgO ina solution of KBR: HgO (s) + 4Br- + H2O → HgBr4 + 2OH- The liberated OH- consumed 46.51 mL of the acid. calculate the molarity of the HClO4
August 27, 2014 by nthabi

Chemistry-Help Please!
@ 20 Celsius - 22g CuSO4 / 100g H2O @ 40 Celsius- 42g CuSO4 / 100g H2O Using this, answer whether these are saturated or unsaturated @ 40 Celsius is 5g CuSO4 / 10g H2O @ 40 Celsius is 99g CuSO4 / 250g H2) I was told that the first one is unsaturated and the second one is ...
May 19, 2011 by Julie

chemistry
A solution of sodium cyanide nacn has a ph of 12.10. How many grams of nacn are in 425ml of solution with the same ph? I do not understand how to calculate this question. Who helps me to solve it for me. Thank you. The right answer 209gm. A 0.446g sample of an unknown ...
August 11, 2012 by Fai

Chemistry
A 25.0mL sample of a 0.100M solution of acetic acid is titrated with a 0.125M solution of NaOH. Calculate the pH of the titration mixture after 10.0, 20.0, and 30.0 mL of base have been added.
November 8, 2010 by Amanda

CHEM
A 0.552 g sample of ascorbic acid(Vitamin C) was dissolved in water to a total volume of 20.0 ml and titrated with 0.1103 M KOH. The equivalence point occurred at 28.42 ml. The pH of the solution at 10.0 ml of added base was 3.72. From this data, determine the molar mass and ...
March 21, 2012 by Cooper

Chemistry
Calculate soln pH if 100 mL 0.10 M Na2S is mixed with 200 mL 0.050 M HCl. The hint is consider Kb for HS^-. The answer is pH=9.74. Can someone walk me through the neccessary steps to get this answer? What are the k1 and k2 values for H2S in your text? Sorry I'm just now ...
May 23, 2007 by John Peterson

Chemistry
Hi, I posted yesterday with this lab question. "Calculate the molar amounts of NaOH used in the reaction with the HCl solution and with the HC2H3O2. I think I got the answer to that with the help that I received. I had 5 mL of HCl, and I was using .100 M NaOH, so I got 5x10-4 ...
April 22, 2007 by Rachel

chemistry
Calculate the molarity of each. a. 1.50 mole of NaCl in 8.00 L of solution 0.188 M NaCl b. 270 mg of NaCl in 3.00 mL of solution 90 M NaCl
February 22, 2012 by krystal

chemistry
enzoic acid is a weak monoprotic acid with Ka = 6.510-5 M. NaOH(s) was gradually added to 1.00 L of 8.6610-2 M benzoic acid. 1. Calculate the pH of the solution before the addition of the base. 2. Calculate the pH of the solution after the addition of 5.2010-2 mol of NaOH(s).
March 25, 2014 by bekah

AP Chemistry
Assume that 30.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a 0.10 M solution of a monoprotic strong acid HX. (a) How many moles of HX have been added at the equivalence point? (b) What is the predominant form of B at the equivalence ...
March 8, 2010 by Sally Perez

chemistry! URGENT
A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 10.0 mg of fluoxymestrone in enough water to give a total volume of 500.0 ml. A 100.0 micro liter aliquot (portion)of this ...
December 7, 2011 by Lindsay

Chemistry
If 31.00 mL of a dilute solution of lime water (calcium hydroxide) required 10.10 mL of 0.246 M hydrochloric acid solution for neutralization to a methyl red end point, calculate the molarity of the lime water. Can you please explain how to do it? Do I use M1V1=M2V2?
April 2, 2011 by Lara

Chemistry
An aqueous KNO3 solution is made using 72.5 grams of KNO3 diluted to a total solution volume of 2.00 liters. If the molarity of the solution is .359 M and the molality of the solution is .354, what is the mass percent of the solution?
February 19, 2012 by Adam

Chemistry
A solution contains 0.0653g of compound in 8.31g of ethanol. The molarity of the solution is 0.0368m. Calculate the molecular weight of the compound For Further Reading Chemisty - drbob222, Thursday, February 7, 2008 at 9:40pm The molarity of the solution can't be 0.0368 m. It...
February 9, 2008 by Lauren

Chem
I'm having a lot of trouble with a simple problem. I have a 3.0% by man solution of H2O2 in H2O. The density of thr solution is 1.0 g/mL. I need to find the molarity. How do I do this? So far I have: 3.0g H2O2 x 1 mol/34.02 g= .0881 mol I'm not sure where to go or what to do ...
March 23, 2007 by Christopher

chem
HCl is a strong acid and ionizes 100%. NaOH is a strong base and ionizes 100%. We have no way of knowing the pH of HCl + H2O because the problem doesn't state the amount of HCl added or the concentration of HCl. For the NaOH + HCl ==> NaCl + HOH. NaCl in water is a neutral ...
May 15, 2007 by DrBob222

chem(molarity)
a buffer contains 0.010 mol of lactic acid and 0.050 mol of sodium lactate per liter . How do I find the molarity of the acid and base?
September 9, 2012 by mary

CHEMISTRY
Dye of iodine is prepared by dissolving in ethanol , and 1% ( one percent ) of this solution contains 10 g of solute in 1000 g of solution 1) how many grams of solvent is there in the solution ? 2) how many moles of solute ( I2) is there? 3) what is the molality of 1% of this ...
July 12, 2014 by MAD

Chemistry
In terms of a buffer solution, can one exist with a strong acid and of weak base in equal volumes but different molarities? e.g. 0.1 HCl and 0.2 NH3? I found this to be the case but still can't find a logical reasoning behind it.
September 3, 2007 by Vic

Chemistry
The neutralization of H3PO4 with KOH is exothermic. H3PO4(aq) + 3KOH(aq) -> 3H2O(l) +K3PO4(aq) +173.2KJ 70.0 mL of 0.207 M H3PO4 is mixed with 70.0 mL of 0.620 M KOH initially at 21.87 C. Predict the final temperature of the solution if its density is 1.13 g/mL and its ...
January 24, 2013 by Sally

chemistry
hi im having problems figuring this out. consider the titration of 100 ml of 0.200 acetic acid by 0.100 koh. Calculate the ph if 250 ml of koh is added ? I tried to find the limiting reagent and go from there but it was a no go then i used the kb for find the poh and then the ...
July 23, 2009 by Jim_R

Molarity/molality
A 3.29 m solution of the solute H2O dissolved in the solvent acetone is available. Calculate the mass ( kg ) of the solution that must be taken to obtain 26.70 mol of H2O. m= molality I have no idea how to approach this problem, I'm not interesting in getting the answer, I ...
May 7, 2010 by ChEm

titrations
I have to find the correct acid-base indicator to use for the following titrations (methyl orange with end point @ pH 4, bromthymol blue with end point @ pH 7, or phenopthanlein with end point @ pH 9). I have several problems given to me, but first I'm trying to figure them ...
May 5, 2007 by Taylor

chemistry
2. 0.300 kilogram chloroform(chlorine calcium3)and 21.0grams eucalyptol(carbon10 hydrogen18 oxygen 3. what is the concentration of a solution of sodium chlorine water containing 1.170grams solute in 100moles solution 4, what is the % by volume of a solution containing 30....
September 14, 2010 by juzen

Chemistry
Hg2+ + 2Cl- → HgCl Mercuric nitrate was standardized by titrating a solution containing 147.6 mg of NaCl(FM 58.44), which required 28.06 ml of Hg(No3)2 solution. Part a: Find the molarity of Hg(No3)2. I already calculated the molarity to be 0.04500 M Part b: When the ...
October 16, 2011 by Asuna

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